Great Gutenberg builder. But it has a learning curve and the UI can take some time getting used to. It is production ready, though, with a lot of powerful features such as dynamic data, accessible blocks, themer, global styling and classes, and basic animations. Sites load blazing fast because of the performant code generated, and there are also lazy loading, basic asset management, etc.

Try out the sandbox on their website to get a feel of what you can achieve. It’s not a simple/basic/beginner-friendly builder mainly because it puts you in the driving seat. Having used Oxygen and Bricks for several sites, I think Cwicly might eventually be in the same league but for native Gutenberg blocks.